hdiutil attach /tmp/ElCapitan.cdr.dmg -noverify -mountpoint /Volumes/install_build Use code with caution.
hdiutil attach /tmp/ElCapitan.dmg -noverify -mountpoint /Volumes/ElCapitan Mac Os X El Capitan 10.11 6 Iso Download
Set the OS type to and version to Mac OS X 10.11 El Capitan . hdiutil attach /tmp/ElCapitan
Wait for the process to complete. The Terminal will erase the disk and copy the installer files to the USB drive, making it bootable. Mac Os X El Capitan 10.11 6 Iso Download
Mount the newly created blank image to your system filesystem:
mv ~/Desktop/ElCapitan.cdr ~/Desktop/ElCapitan.iso
You must open the DMG and run the .pkg inside to extract the "Install OS X El Capitan" app to your Applications folder. 2. Creating an ISO from the Installer